Eeaper and mower



(ModeL) 2 Sheets-Sheet 1 P; JAHAZARD.

- :RBAPER AND MOWER. 1%. 253,477. Patented Feb. 7,1882.

(7 m WL M N. PETERS. Phvioumogrlphen Washington. I16

(ModeL) 2 Sheets-Sheet 2. I

F.J. HAZARD.

- BEAPER AND MOWER. v No. 253,477. Patented Feb. 7,1882.

WITNESSES j l/VVE/VTUR I *c jK -1 UNITE STATES PATENT OFFICE.

FREDERICK J. HAZARD,OF BELLEVILLE, ONTARIO,-GANADA, ASSIGNOR OF ONE-HALFTO THOMAS FULLER, OF SAME PLACE.

REAPER AND MOWER.

SPECIFICATION forming part of Letters Patent No. 253,477, dated February'7, 1882.

Application filed December 10, 1880. (ModeL) Patented in Canada November15, 1880.

Toall whom it may concern Be it known that I, FREDERICK JAMES HAZARD, asubject of Her Majesty the Queen of Great Britain, residing atBelleville. county of Hastings, in the Province of Ontario and Dominionof Canada, have invented a certain new and useful Improvement in Reapingand Mowing Machines; and I do hereby declare that the following is aclear and exact description of the invention, which will enable othersskilled in the art to which it appertains to make and use the same,reference being had to the two sheets of drawings hereto annexed,

which-form a part of this specification, and in which Figure 1 is a planview of so much of a mow ing-machine as is necessary to illustrate myinvention. Fig. 2 is a vertical sectional view through the line as w inFig. 1; and Fig.3, Sheet 2, is an enlarged view of a section of theperiphery of the grooved driving-wheel with its pair offriction-rollers.

Similar letters of reference indicate corresponding parts in all thefigures.

My invention relates to the mechanism for imparting a reciprocatingmotion to the sicklebar of a reaping or mowing machine, and moreespecially to that class of mechanism in which a drive or motor wheelprovided with a peripherical undulated groove engages one or morefriction-rollersat the end of 'a rockshaft, the other end of whichcarries the crank or wrist pin which connects with the pitman head.

My improvement consists in the combination, with the grooved drive-wheeland with the rock-shaft, of a pair of tapering frictionrollers arrangedin contiguity to one another upon the end of the rock-shaft, so that theiongitudinal axis of this, if continued, would intersect the peripheryof both the rollers through a line drawn between their centers.

In thedrawings,AAare therunning-wheels, B the axle, and U a framemounted upon the axle, which carries the working parts of the machine.

D is the driving-wheel, which is journaled loosely upon axle B, withwhich it may be made to rotate by means of a suitably-arranged clutchmechanism, K, provided with a treadle or foot-lever, L. i

' O is the tongue, and M represents the shoe.

The periphery of the drive-wheel D has an undulating groove or channel,(I, with alternating rounded points or shoulders a. (See Fig. 3.)

Upon frame 0, in a line with the groove d, is affixed a cylindrical boxor bearing, 0, for the rock-shaft G, at the inner end of which is across-head, F, carrying the rollers E E. By reference to Figs. 2 and 3of the drawings it will be seen that these rollers are mounted upon headF in contiguity to one another, so that the axis of shaft G, ifcontinued in the direction of the drive-wheel, would intersect the innerperipheries of both rollers across a line connecting their centers,or atthe point marked 2 in Fig. 3. The advantage of this specificconstruction and arrangement is that alljerking or pounding motion ofthe rollers in the groove is avoided, the throw or lateral movement ofthe rollers is reduced to a minimum, and the points or shoulders to arepassed without undue friction, because at the precise moment when one ofthe rollers-as the bottom roller shown in Fig. 3-is about to strike andpass the shoulder a next above, the upper roller will not quite havearrived at the shoulder next above it, the rounded apex of which is notreached until the lower '80 roller shall have passed its point orshoulder, so that the shaftGr will oscillate smoothly and evenly at alltimes. At no point is there any play between the rollers and the groovewithin which they work; but their motion is absolutely even and uniform,huggin g closely both the undulating sides of the groove or channel inwhich they run.

The. head of the pitman J, which connects with and imparts motion to thesickle-bar N, is pivoted upon a crank or wrist pin, H, at the outer endof rock-shaft G, as shown in the drawings.

Having thus described my invention, I do not claim broadly thecombination of the grooved 5 drive-wheel and rock-shaft provided with across-head carrying two friction-rollers which work in the groove of thedrive-wheel; but

What I claim as my improvement, and derock-shaft-,ifproduoed,shall hecoineidentwith 1o sire to secure by Letters Patent of the United theperipheries of both rollers across a line States, isdrawn between theircenters, as shown and The combination ofv the drive-wheel D,havspecified, for thepurpose set forth.

5 ing the peripherical undulating groove 01, with rounded shoulders a,horizontal rook-shaft G, FREDERICK JAMES HAZARD having eross'heacl F,and a pair of rollers, E Witnesses:

E, journaled upon said cross-head in contigu- LOUIS ()URTIs,

ity to one another, so that the axis of the JOHN D. EVANS.

